CN105430143B - Communication processor, VoLTE realization method, mobile terminal and data card - Google Patents
Communication processor, VoLTE realization method, mobile terminal and data card Download PDFInfo
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Abstract
A communication processor, a method for realizing VoLTE, a mobile terminal and a data card; the communication processor includes: a radio protocol stack entity; the voice over LTE system comprises a VoLTE function control module, a voice coding and decoding module, an IMS protocol stack entity and a TCP/IP protocol stack entity; the VoLTE function control module respectively interacts control messages with the voice coding and decoding module, the IMS protocol stack entity and the wireless protocol stack entity; TCP/IP protocol stack entity interacts TCP/IP data with wireless protocol stack entity and IMS protocol stack entity respectively; and the voice coding and decoding module interacts audio data and control messages with peripheral audio equipment and interacts audio data with an IMS protocol stack entity. The invention is a VoLTE implementation scheme which can support different product forms, reduce power consumption and reduce the requirements of communication devices between the AP and the CP.
Description
Technical Field
The invention mainly relates to the field of embedded mobile terminals, in particular to a communication processor, a VoLTE (voice over long term evolution) realization method, a mobile terminal and a data card.
Background
The mobile terminal is under 2G/3G network, the voice call is realized by CS (Circuit Switch, information exchange based on Circuit); the LTE 4G network only supports PS (Packet Switch, information exchange based on Packet data) mode data communication services, and does not support CS mode voice communication. Therefore, in LTE 4G individual networking, it is necessary to adopt a Voice over LTE (Voice over LTE) technology based on a PS scheme and use a packet data exchange scheme to implement LTE 4G Voice call. Under the 2G/3G/4G mixed network, the system can be returned to the 2G/3G network through CSFB (Circuit switched fallback) to carry out CS mode voice communication.
The VoLTE voice call software module of the mobile terminal is shown in fig. 1, and includes a VoLTE interface interaction module, a VoLTE function control module, an IMS (IP Multimedia Subsystem) protocol stack, and a voice codec module.
In addition, a TCP/IP (Transmission Control Protocol/Internet Protocol ) Protocol stack, a bottom layer Transmission support of a wireless Protocol stack, and a voice support of an audio device playing/capturing user are required.
And the VoLTE interface interaction module is responsible for user interaction and interface display. For example, the VoLTE available state is displayed, the operation of dialing and answering the VoLTE voice telephone by the user is acquired, and the operation is transmitted to the VoLTE function control module; and meanwhile, receiving a VoLTE voice call incoming message reported by a bottom layer, and informing a user through interface display and ringing.
The VoLTE function control module is responsible for realizing the VoLTE function. The method comprises the following steps:
1) wireless access management function: and interacting with an LTE MODEM (MODEM) wireless protocol stack to acquire a VoLTE network state, maintaining the VoLTE network state and managing the establishment and disconnection of an IMS (IP multimedia subsystem) special data connection link between the mobile terminal and the VoLTE network.
2) VoLTE service functions: through interaction with an IMS protocol stack, the VoLTE available state of the mobile terminal in the VoLTE network is maintained, and a VoLTE voice call initiating and answering function is provided.
3) VoLTE voice call audio control function: and the voice coding and decoding module is controlled to be opened and closed through interaction with the voice coding and decoding module, and the VoLTE call voice volume is adjusted.
The IMS protocol stack is a VoLTE voice call core protocol stack and is responsible for transmitting and processing VoLTE network interaction signaling and VoLTE audio multimedia TCP/IP data packets.
The whole VoLTE voice call is divided into a signaling negotiation stage and a voice call multimedia interaction stage. In a VoLTE voice call signaling negotiation stage, an IMS protocol stack is responsible for receiving a VoLTE function control module request of a home terminal and carrying out VoLTE signaling interaction negotiation with remote equipment; after the VoLTE calling signaling negotiation is finished, a voice call multimedia interaction stage is started, and the IMS protocol stack is responsible for receiving, transmitting and processing VoLTE audio multimedia data packets. And splitting the VoLTE audio multimedia data packet transmitted by the remote user, and transmitting the VoLTE audio multimedia data packet to the voice coding and decoding module for audio decoding processing. And meanwhile, voice coding data of the home terminal user transmitted by the voice coding and decoding module are packaged into a VoLTE audio multimedia data packet and transmitted to a remote terminal user through a TCP/IP network.
The voice coding and decoding module is responsible for decoding and optimizing the VoLTE multimedia data packet transmitted by the IMS protocol stack and finally transmitting the VoLTE multimedia data packet to audio equipment (earphones, loudspeakers and the like) for playing; and meanwhile, the voice data of the local user, which is transmitted by an audio device MIC (microphone), is encoded and converted into a VoLTE multimedia data packet, and the VoLTE multimedia data packet is transmitted to an IMS protocol stack and finally transmitted to a remote user through a TCP/IP network.
The TCP/IP protocol stack is responsible for transceiving VoLTE signaling and voice multimedia TCP/IP data packets.
The wireless protocol stack is responsible for establishing and disconnecting an IMS dedicated data connection link between the mobile terminal and the VoLTE network, and provides functions of VoLTE signaling and multimedia data packet bottom layer transceiving transmission.
In current 4G mobile terminal implementations, VoLTE voice functionality has been implemented based on an AP (Application Processor) and an android operating system.
Fig. 2 illustrates a VoLTE implementation scheme of the mobile terminal based on the AP, where a VoLTE interface interaction module, a VoLTE function control module, an IMS protocol stack, a TCP/IP protocol stack, and a voice encoding and decoding module in a multimedia framework are included in the AP, and the lte modem provides a wireless protocol stack and a radio frequency baseband module.
It can be seen that the AP VoLTE implementation has the following drawbacks:
1) is not favorable for saving electricity: the main VoLTE voice function modules are operated in the AP, and in VoLTE voice communication, for example, after the VoLTE voice communication of the smart phone is in a black screen state, the AP still needs to operate an IMS protocol and cannot enter deep sleep.
2) The stability and popularization of the VoLTE function on the mobile terminal are not facilitated: the VoLTE wireless access management function in the VoLTE function control module needs to perform different transplantation adaptation work aiming at different lte modem wireless protocol stacks of different manufacturers. Because different MODEM LTE AT commands have large difference and cannot be simply transplanted, the LTE AT commands are customized again according to different LTE MODEMs. In addition, because the VoLTE function control module is implemented in the AP, the implementation manner is different for different AP operating systems, for example, on an Android platform, the module code is generally written in JAVA, and on a Windows embedded system, the module code is generally written in C.
3) The development of the 4G/5G mobile terminal is not facilitated. High-speed TCP/IP data packet Communication support is needed between the AP and the CP (Communication Processor), and the transmission performance of the AP/CP needs to be considered.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a VoLTE implementation scheme which can support different product forms, reduce power consumption and reduce the requirements of communication devices between an AP and a CP.
In order to solve the above problem, the present invention provides a communication processor CP, which is applied in an LTE modem, and includes: a radio protocol stack entity; a voice service VoLTE function control module based on long-term evolution, a voice coding and decoding module, an IP multimedia subsystem IMS protocol stack entity and a transmission control protocol/internet protocol TCP/IP protocol stack entity;
the VoLTE function control module respectively interacts control messages with the voice coding and decoding module, the IMS protocol stack entity and the wireless protocol stack entity; the TCP/IP protocol stack entity interacts TCP/IP data with the wireless protocol stack entity and the IMS protocol stack entity respectively; and the voice coding and decoding module interacts audio data and control messages with peripheral audio equipment and interacts audio data with an IMS protocol stack entity.
Optionally, the VoLTE function control module sends a control message for instructing display of specific content through an interface of the LTE modem, and receives a control message for instructing a specific VoLTE operation to be performed.
Optionally, the interface of the LTE modem is an AT command interface.
The present invention also provides a mobile terminal, comprising: an application processor AP;
the communication processor CP described above;
the AP comprises: a VoLTE interface interaction module;
and the VoLTE function control module and the VoLTE interface interaction module interact control messages.
Optionally, the VoLTE function control module is configured to notify the wireless protocol stack entity to receive a VoLTE network access notification, establish an IMS dedicated data connection link after receiving the VoLTE network access notification sent by the wireless protocol stack entity, and perform VoLTE voice function registration of the mobile terminal on the VoLTE network through the IMS dedicated data connection; and after the registration is finished, informing the VoLTE interface interaction module to display the VoLTE voice function available state of the mobile terminal.
Optionally, the VoLTE function control module is configured to notify the radio protocol stack entity to receive a notification that the mobile terminal leaves a VoLTE network service area and the IMS dedicated data connection is disconnected; after receiving a notice of leaving the VoLTE network service area sent by the wireless protocol stack entity, initiating a VoLTE voice function logout process of the mobile terminal; after logging off, informing the VoLTE interface interaction module to remove the available state display of the VoLTE voice function; and when the IMS special data connection disconnection notice is received, the VoLTE interface interaction module is notified to remove the VoLTE voice function available state display.
Optionally, the VoLTE interface interaction module is configured to notify the VoLTE function control module when a user initiates an operation of a VoLTE voice call or when a user initiates an operation of hanging up a VoLTE call request;
the VoLTE function control module is used for initiating VoLTE voice call IMS protocol signaling negotiation to a VoLTE network through an IMS protocol stack entity, a TCP/IP protocol stack entity and a wireless protocol stack entity when receiving a notice of initiating VoLTE voice telephone operation; after receiving a notice that a remote user answers a VoLTE voice call, which is sent by a VoLTE network through a TCP/IP protocol stack entity, a wireless protocol stack entity and an IMS protocol stack entity, the VoLTE interface interaction module is notified to display that the VoLTE voice call enters a conversation state, and the audio encoding and decoding module is opened; when receiving the notice of hanging up the VoLTE voice telephone operation, initiating VoLTE voice call hanging up signaling negotiation to a VoLTE network through an IMS protocol stack entity, a wireless protocol stack entity and a TCP/IP protocol stack entity; after receiving a VoLTE voice call disconnection notification sent by a VoLTE network through a TCP/IP protocol stack entity, a wireless protocol stack entity and an IMS protocol stack entity, closing an audio coding and decoding module, and notifying a VoLTE interface interaction module to prompt a user that VoLTE voice call is ended;
the audio coding and decoding module is used for carrying out audio decoding on an audio multimedia data packet transmitted by the VoLTE network after the IMS protocol stack entity is split, and further transmitting connected audio equipment; and the voice coding module is also used for coding the voice transmitted by the connected audio equipment and then transmitting the coded voice to the IMS protocol stack entity, packaging the voice into an audio multimedia data packet and transmitting the audio multimedia data packet to the VoLTE network.
Optionally, the VoLTE function control module is configured to notify the VoLTE interface interaction module that the VoLTE voice incoming call is prompted after receiving a notification of the VoLTE voice incoming call sent by the VoLTE network via the wireless protocol stack entity, the TCP/IP protocol stack entity, and the IMS protocol stack entity; after receiving the notification of receiving the voice call from the VoLTE interface interaction module, the VoLTE network user is notified to receive the VoLTE voice call through the IMS protocol stack entity, the TCP/IP protocol stack entity and the wireless protocol stack entity, and the audio coding and decoding module is opened;
the audio coding and decoding module is used for carrying out audio decoding on an audio multimedia data packet transmitted by the VoLTE network after the IMS protocol stack entity is split, and further transmitting the audio multimedia data packet to the connected audio equipment; and the voice coding module is also used for coding the voice transmitted by the connected audio equipment and then transmitting the coded voice to the IMS protocol stack entity, and the coded voice is packaged into an audio multimedia data packet by the IMS protocol stack entity and transmitted to the VoLTE network.
The present invention also provides a data card comprising:
the communication processor CP described above;
the CP further comprises:
and the audio equipment is connected with the voice coding and decoding module and used for interacting control messages and audio data.
The present invention also provides a data card comprising:
the communication processor CP described above;
the CP further comprises:
the USB interface is connected with the voice coding and decoding module and used for interacting audio data; and also connected with USB interfaces in other devices.
The invention also provides a method for realizing the voice service VoLTE based on the long-term evolution, which comprises the following steps:
a VoLTE function control module in a communication processor CP respectively interacts control messages with a voice coding and decoding module, a wireless protocol stack entity and an IMS protocol stack entity in the CP;
the wireless protocol stack entity and the TCP/IP protocol stack entity in the CP interact TCP/IP data;
the TCP/IP protocol stack entity and the IMS protocol stack entity interact TCP/IP data;
the IMS protocol stack entity and the voice coding and decoding module interact audio data;
and the voice coding and decoding module interacts audio data and control messages with peripheral audio equipment.
The invention provides a VoLTE implementation scheme of a mobile terminal based on an LTE MODEM CP, which is implemented by moving a VoLTE voice function main module into MODEM CP chip software. Has the following advantages:
1) during the VoLTE voice call, the LTE MODEM CP is in an active state and does not sleep. At the moment, the LTE MODEM CP processes an IMS protocol, performs voice coding and decoding, directly interacts with peripheral audio equipment (MIC, earphones and loudspeakers) without participation of an AP CPU (access point), so that the AP can enter deep sleep during VoLTE voice communication, and the aim of saving power is fulfilled.
2) The VoLTE function control module and the wireless protocol stack entity are integrated in an LTE MODEM CP chip processor for coding, can be solidified into LTE MODEM CP chip software, still provide AT command interfaces for the outside, and can be quickly transplanted on different platforms, thereby supporting different product forms (intelligent machines, data cards and embedded 4G wireless equipment).
3) The TCP/IP data packet high-speed communication of the AP and the CP can be reduced, and the requirement of a communication device between the AP and the CP is lowered.
Drawings
Figure 1 is a schematic diagram of a VoLTE functional software module architecture for a mobile terminal;
figure 2 is a schematic diagram of an AP-based VoLTE implementation of a mobile terminal;
figure 3 is a schematic diagram of a VoLTE implementation of a CP-based mobile terminal;
FIG. 4 is a schematic diagram of VoLTE implementation based on a data card with an audio device;
fig. 5 is a schematic diagram of a VoLTE implementation based on data without self-contained audio equipment.
Detailed Description
The technical solution of the present invention will be described in more detail with reference to the accompanying drawings and examples.
It should be noted that, if not conflicting, the embodiments of the present invention and the features of the embodiments may be combined with each other within the scope of protection of the present invention. Additionally, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
An embodiment of a communication processor CP is applied to an LTE MODEM, and includes:
the voice over LTE system comprises a VoLTE function control module, a voice coding and decoding module, a wireless protocol stack entity, an IMS protocol stack entity and a TCP/IP protocol stack entity;
the VoLTE function control module respectively interacts control messages with the voice coding and decoding module, the IMS protocol stack entity and the wireless protocol stack entity; the TCP/IP protocol stack entity interacts TCP/IP data with the wireless protocol stack entity and the IMS protocol stack entity respectively; and the voice coding and decoding module interacts audio data and control messages with peripheral audio equipment and interacts audio data with an IMS protocol stack entity.
The embodiment provides an LTE MODEM CP embedded with a VoLTE voice function, which can be applied to products in different forms, and can support development of android/windows AP + LTE MODEM CP smart machine products and PC + LTE MODEM data cards.
In this embodiment, the VoLTE function control module may send a control message for instructing to display a specific content through an interface of the LTE modem, and receive a control message for instructing to perform a specific VoLTE operation.
In this embodiment, the interface of the LTE modem may be, but is not limited to, an AT command interface.
For example, when the CP is applied to the mobile terminal, the CP may be connected to the AP in the mobile terminal through the AT command interface, so that the VoLTE interface interaction module in the AP can display a corresponding VoLTE voice communication message (for example, VoLTE voice communication may be performed, a VoLTE call is received, etc.) to the user; in addition, control messages (such as initiating, answering and hanging up a VoLTE voice call and the like) returned by the VoLTE interface interaction module according to the operation of a user can be received by the AT command interface and sent to the VoLTE function control module.
In a second embodiment, a mobile terminal for implementing VoLTE voice, as shown in fig. 3, includes:
AP and CP as described in the first embodiment;
the AP comprises: a VoLTE interface interaction module;
the VoLTE function control module interacts control messages with the IMS protocol stack entity, the wireless protocol stack entity and the VoLTE interface interaction module; TCP/IP data are interacted among the TCP/IP protocol stack entity, the wireless protocol stack entity and the IMS protocol stack entity; and audio data and control messages are interacted between the voice coding and decoding module and the audio equipment, and audio data is interacted between the IMS protocol stack entities.
The embodiment is a VoLTE implementation scheme of the mobile terminal based on the LTE MODEM CP. The main VoLTE voice function module is integrated on the LTE MODEM CP for realization. The CP may further include a radio frequency baseband module that interacts TCP/IP data with a radio protocol stack entity.
The following describes the procedures necessary for implementing the VoLTE voice call function, including registration and deregistration of the VoLTE voice function, VoLTE voice calling, and VoLTE voice called, with reference to the scheme of fig. 3.
VoLTE voice function registration process
101: and the VoLTE function control module informs the wireless protocol stack entity of receiving the VoLTE network access notice.
102: when the mobile terminal enters into the VoLTE network service area, the wireless protocol stack entity accesses the VoLTE network and informs the registered VoLTE function control module to establish an IMS special data connection link.
103: after the VoLTE function control module completes the establishment of IMS special data connection, the VoLTE function control module registers the VoLTE voice function of the mobile terminal to the VoLTE network through the IMS special data connection.
104: after the VoLTE voice function registration is completed, the VoLTE function control module informs the VoLTE interface interaction module to display the VoLTE voice function available state of the mobile terminal and indicate that the user can initiate VoLTE voice call at the moment.
VoLTE voice function logout flow
201: and the VoLTE function control module informs the wireless protocol stack entity to receive the notification that the mobile terminal leaves the VoLTE network service area and the IMS special data connection is disconnected.
202: when the mobile terminal leaves the VoLTE network service area, the wireless protocol stack entity notifies the registered VoLTE function control module and initiates a VoLTE voice function logout process of the mobile terminal.
203: and after the VoLTE function control module finishes the cancellation of the VoLTE voice function, the VoLTE interface interaction module is notified, the available state display of the VoLTE voice function is removed, and the user is indicated that the VoLTE voice call cannot be initiated at the moment.
After step 201, in addition to steps 202 and 203, there is another branch step:
204: if the mobile terminal suddenly loses VoLTE network service or IMS dedicated data connection is suddenly disconnected, the wireless protocol stack entity informs the VoLTE function control module of the disconnection of the IMS dedicated data connection.
205: and after the VoLTE function control module clears the internal state, the VoLTE interface interaction module is notified, the available state display of the VoLTE function is removed, and the user is indicated that the VoLTE voice call cannot be initiated at the moment.
(III) VoLTE voice call initiation process
301: in the VoLTE voice function available state, the user initiates VoLTE voice telephony operation. And the VoLTE interface interaction module informs the VoLTE function control module to initiate VoLTE voice call.
302: the VoLTE function control module initiates VoLTE voice call IMS protocol signaling negotiation to a VoLTE network through an IMS protocol stack entity, a TCP/IP protocol stack entity and a wireless protocol stack entity. Initiating a VoLTE protocol signaling negotiation.
303: the VoLTE network informs the far-end VoLTE mobile terminal to ring, and prompts a VoLTE voice incoming call of a far-end user. Meanwhile, the VoLTE network informs the VoLTE function control module of the home terminal through a TCP/IP protocol stack entity, a wireless protocol stack entity and an IMS protocol stack entity to prompt that a remote user rings.
304: after the far-end user answers, the VoLTE network informs the VoLTE function control module through a TCP/IP protocol stack entity, a wireless protocol stack entity and an IMS protocol stack entity, and the far-end user already answers the VoLTE voice call.
305: and the VoLTE function control module informs the VoLTE interface interaction module to display that the VoLTE voice call enters a conversation state and complete the signaling negotiation of the voice call IMS protocol of the VoLTE.
306: and the VoLTE function control module simultaneously opens the audio coding and decoding module to enable the audio coding and decoding module to enter a VoLTE voice call state. The IMS protocol stack entity continuously splits audio multimedia data packets transmitted from the VoLTE network, transmits the audio multimedia data packets to the voice coding and decoding module for audio decoding, and further transmits the audio multimedia data packets to the earphone/loudspeaker for playing. Meanwhile, the voice coding and decoding module continuously codes the voice transmitted by the MIC of the local terminal and transmits the coded voice to the IMS protocol stack entity, and the voice is packaged into an audio multimedia data packet by the IMS protocol stack entity and transmitted to the VoLTE network. The remote VoLTE mobile terminal performs similar operation to realize VoLTE voice communication between the local terminal and the remote terminal user.
307: during conversation, a home terminal user can start a VoLTE conversation hanging-up request through the VoLTE interface interaction module.
308: and the VoLTE interface interaction module informs the VoLTE function control module that the user hangs up the call. The VoLTE function control module initiates VoLTE voice call hang-up signaling negotiation to a VoLTE network through an IMS protocol stack entity, a TCP/IP protocol stack entity and a wireless protocol stack entity.
309: after the VoLTE network processes and finishes the hang-up signaling processing, the VoLTE network simultaneously informs the local terminal and the remote VoLTE function control module of VoLTE voice call disconnection through the wireless protocol stack entity, the TCP/IP protocol stack entity and the IMS protocol stack entity, and the VoLTE voice call hang-up signaling negotiation is finished.
310: and the VoLTE function control module closes the audio coding and decoding module, enables the audio coding and decoding module to exit the VoLTE voice call state, and simultaneously informs the VoLTE interface interaction module to prompt the user that the VoLTE voice call is finished.
(IV) answering VoLTE voice call flow
401: and in the state that the VoLTE voice function is available, the VoLTE network informs the VoLTE function control module of a new VoLTE voice incoming call through the wireless protocol stack entity, the TCP/IP protocol stack entity and the IMS protocol stack entity.
402: and the VoLTE function control module informs the VoLTE interface interaction module to prompt that VoLTE voice incoming calls exist.
403: and the user answers the incoming call through the VoLTE interface interaction module. And the VoLTE interface interaction module informs the VoLTE function control module that the user answers the call and simultaneously transfers the interface to the call interface.
404: and the VoLTE function control module informs a VoLTE network user to answer the VoLTE voice call through an IMS protocol stack entity, a TCP/IP protocol stack entity and a wireless protocol stack entity.
405: and the VoLTE function control module simultaneously opens the audio coding and decoding module to enter VoLTE voice call multimedia interaction. The IMS protocol stack entity continuously splits audio multimedia data packets transmitted from the VoLTE network, performs audio decoding on the audio data packets for the voice coding and decoding module, and transmits the audio data packets to the earphone/loudspeaker audio equipment for playing. Meanwhile, the voice coding and decoding module continuously codes voice data transmitted by the MIC audio equipment at the home terminal, transmits the voice data to the IMS protocol stack entity, packages the voice data into an audio multimedia data packet by the IMS protocol stack entity and finally transmits the audio multimedia data packet to the VoLTE network. And the remote VoLTE mobile terminal performs similar operation to realize VoLTE voice communication between the local terminal and the remote terminal user.
406: during conversation, a home terminal user initiates a VoLTE voice conversation hanging-up request through the VoLTE interface interaction module.
407: and the VoLTE interface interaction module informs the VoLTE function control module that the user hangs up the call. The VoLTE function control module initiates VoLTE voice call hang-up signaling negotiation to a VoLTE network through an IMS protocol stack entity, a TCP/IP protocol stack entity and a wireless protocol stack entity.
408: after the VoLTE network processes the hang-up signaling, the VoLTE network simultaneously informs the local terminal and the remote VoLTE function control module of VoLTE voice call disconnection through the wireless protocol stack entity, the TCP/IP protocol stack entity and the IMS protocol stack entity, and the VoLTE voice call hang-up signaling negotiation is completed.
409: and the VoLTE function control module closes the audio coding and decoding module, enables the audio coding and decoding module to exit the VoLTE voice call state, and simultaneously informs the VoLTE interface interaction module to prompt the user that the VoLTE voice call is finished.
In a third embodiment, a data card includes:
the CP as described in embodiment one;
the CP further comprises:
and the audio equipment is connected with the voice coding and decoding module and used for interacting control messages and audio data.
Fig. 4 shows one of the VoLTE voice function data card product schemes, assuming that the existing data card PC software supports the CS voice function. The LTE MODEM CP structure in the solution shown in fig. 4 is the same as that in the solution shown in fig. 3, except that the VoLTE function control module is connected to the VoLTE interface interaction module, and is changed to be connected to the PC software VoLTE function module in the PC.
1) The LTE MODEM CP chip embedded with the VoLTE voice function externally uses an AT command interface and is compatible with CS calling standard commands, so that the original AT commands can be continuously used when the chip is interacted with a PC, and simple expansion is carried out (the available state of the VoLTE voice function is displayed).
2) The VoLTE voice function module in the data card PC software can be supported by state display, namely, the VoLTE voice function development can be completed, the original call related interface and function do not need to be changed, and the whole workload is very small.
In a fourth embodiment, a data card includes:
the CP as described in embodiment one;
the CP further comprises:
the USB interface is connected with the voice coding and decoding module and used for interacting audio data; and also connected with USB interfaces in other devices.
Fig. 5 is a second product scheme of the VoLTE voice function data card, assuming that the LTE MODEM data card has no audio equipment (MIC, earphone, speaker), the PC software of the original data card supports the CS voice function, and uses the MIC and the earphone/speaker externally connected to the PC. The difference between the scheme of fig. 5 and the scheme of fig. 4 is that the speech codec module is not connected to the audio device, but is instead connected to the USB interface; and the USB interface in the CP is connected with the USB interface in the PC, and the USB interface in the PC is connected with the audio equipment.
1) The VoLTE function externally uses an AT command interface form and is compatible with CS call standard commands, so that the interaction with the PC can follow the original AT command interface and make simple extension (the VoLTE voice function can be displayed in a usable state).
2) The VoLTE voice function can be supported by the state display in the data card PC software, so that the VoLTE voice function development can be completed, and the original call related interface and function do not need to be changed.
3) A pair of endpoints is added on the connection between the data card and the PC USB for transmitting PCM voice data, and the PC side needs to transfer the corresponding voice data to the external audio equipment (MIC, earphone and loudspeaker). The overall workload is not large.
Fifth, a method for implementing VoLTE includes:
a VoLTE function control module in the CP respectively interacts control messages with a voice coding and decoding module, a wireless protocol stack entity and an IMS protocol stack entity in the CP;
the wireless protocol stack entity and the TCP/IP protocol stack entity in the CP interact TCP/IP data;
the TCP/IP protocol stack entity and the IMS protocol stack entity interact TCP/IP data;
the IMS protocol stack entity and the voice coding and decoding module interact audio data;
and the voice coding and decoding module interacts audio data and control messages with peripheral audio equipment.
For details of other implementations of this embodiment, reference may be made to embodiments one to four.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A communication processor CP is applied to an LTE modem and comprises the following components: a radio protocol stack entity;
it is characterized by also comprising:
a voice service VoLTE function control module based on long-term evolution, a voice coding and decoding module, an IP multimedia subsystem IMS protocol stack entity and a transmission control protocol/internet protocol TCP/IP protocol stack entity;
the VoLTE function control module respectively interacts control messages with the voice coding and decoding module, the IMS protocol stack entity and the wireless protocol stack entity; the TCP/IP protocol stack entity interacts TCP/IP data with the wireless protocol stack entity and the IMS protocol stack entity respectively; audio data and control messages are interacted between the voice coding and decoding module and peripheral audio equipment, and audio data is interacted between the voice coding and decoding module and an IMS protocol stack entity;
the VoLTE function control module sends a control message for indicating other equipment to display specific content through an interface of the LTE modem, and receives the control message for indicating to perform specific VoLTE operation sent by the other equipment, wherein the other equipment is a VoLTE interface interaction module in an application processor AP or a PC software VoLTE function module in a PC.
2. The CP of claim 1, wherein:
the interface of the LTE modem is an AT command interface.
3. A mobile terminal, comprising: an application processor AP;
it is characterized by also comprising:
the communication processor CP according to any one of claims 1 to 2;
the AP comprises: a VoLTE interface interaction module;
and the VoLTE function control module and the VoLTE interface interaction module interact control messages.
4. The mobile terminal of claim 3, wherein:
the VoLTE function control module is used for informing the wireless protocol stack entity to receive a VoLTE network access notice, establishing an IMS special data connection link after receiving the VoLTE network access notice sent by the wireless protocol stack entity, and registering a VoLTE voice function of the mobile terminal to the VoLTE network through the IMS special data connection; and after the registration is finished, informing the VoLTE interface interaction module to display the VoLTE voice function available state of the mobile terminal.
5. The mobile terminal of claim 3, wherein:
the VoLTE function control module is used for informing the wireless protocol stack entity to receive the notice that the mobile terminal leaves the VoLTE network service area and the IMS dedicated data connection is disconnected; after receiving a notice of leaving the VoLTE network service area sent by the wireless protocol stack entity, initiating a VoLTE voice function logout process of the mobile terminal; after logging off, informing the VoLTE interface interaction module to remove the available state display of the VoLTE voice function; and when the IMS special data connection disconnection notice is received, the VoLTE interface interaction module is notified to remove the VoLTE voice function available state display.
6. The mobile terminal of claim 3, wherein:
the VoLTE interface interaction module is used for informing the VoLTE function control module when a user initiates the operation of VoLTE voice call or when the user initiates the operation of hanging up a VoLTE call request;
the VoLTE function control module is used for initiating VoLTE voice call IMS protocol signaling negotiation to a VoLTE network through an IMS protocol stack entity, a TCP/IP protocol stack entity and a wireless protocol stack entity when receiving a notice of initiating VoLTE voice telephone operation; after receiving a notice that a VoLTE network answers a VoLTE voice call sent by a TCP/IP protocol stack entity, a wireless protocol stack entity and an IMS protocol stack entity, a far-end user notifies the VoLTE interface interaction module to display that the VoLTE voice call enters a conversation state, and opens the voice coding and decoding module; when receiving the notice of hanging up the VoLTE voice telephone operation, initiating VoLTE voice call hanging up signaling negotiation to a VoLTE network through an IMS protocol stack entity, a wireless protocol stack entity and a TCP/IP protocol stack entity; after receiving a VoLTE voice call disconnection notification sent by a VoLTE network through a TCP/IP protocol stack entity, a wireless protocol stack entity and an IMS protocol stack entity, closing the voice coding and decoding module, and notifying a VoLTE interface interaction module to prompt a user that the VoLTE voice call is ended;
the voice coding and decoding module is used for carrying out audio decoding on an audio multimedia data packet transmitted by the VoLTE network after the IMS protocol stack entity is split, and further transmitting connected audio equipment; and the voice coding module is also used for coding the voice transmitted by the connected audio equipment and then transmitting the coded voice to the IMS protocol stack entity, packaging the voice into an audio multimedia data packet and transmitting the audio multimedia data packet to the VoLTE network.
7. The mobile terminal of claim 3, wherein:
the VoLTE function control module is used for notifying the VoLTE interface interaction module to prompt the VoLTE voice incoming call after receiving the VoLTE voice incoming call notification sent by the VoLTE network through the wireless protocol stack entity, the TCP/IP protocol stack entity and the IMS protocol stack entity; after receiving the notification of receiving the voice call from the VoLTE interface interaction module, notifying a VoLTE network user to receive the VoLTE voice call through an IMS protocol stack entity, a TCP/IP protocol stack entity and a wireless protocol stack entity, and opening the voice coding and decoding module;
the voice coding and decoding module is used for carrying out audio decoding on an audio multimedia data packet transmitted by the VoLTE network after the IMS protocol stack entity is split, and further transmitting the audio multimedia data packet to the connected audio equipment; and the voice coding module is also used for coding the voice transmitted by the connected audio equipment and then transmitting the coded voice to the IMS protocol stack entity, and the coded voice is packaged into an audio multimedia data packet by the IMS protocol stack entity and transmitted to the VoLTE network.
8. A data card, comprising:
the communication processor CP according to any one of claims 1 to 2;
the CP further comprises:
and the audio equipment is connected with the voice coding and decoding module and used for interacting control messages and audio data.
9. A data card, comprising:
the communication processor CP according to any one of claims 1 to 2;
the CP further comprises:
the USB interface is connected with the voice coding and decoding module and used for interacting audio data; and also connected with USB interfaces in other devices.
10. A method for realizing voice service VoLTE based on long term evolution comprises the following steps:
a VoLTE function control module in a communication processor CP respectively interacts control messages with a voice coding and decoding module, a wireless protocol stack entity and an IMS protocol stack entity in the CP; wherein the communication processor CP is applied to an LTE modem;
the wireless protocol stack entity and the TCP/IP protocol stack entity in the CP interact TCP/IP data;
the TCP/IP protocol stack entity and the IMS protocol stack entity interact TCP/IP data;
the IMS protocol stack entity and the voice coding and decoding module interact audio data;
the voice coding and decoding module interacts audio data and control messages with peripheral audio equipment;
the VoLTE function control module interacts control information with a VoLTE interface interaction module in an application processor AP through an interface of the LTE modem, or the VoLTE function control module interacts control information with a PC software VoLTE function module in a PC through the interface of the LTE modem.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410474292.2A CN105430143B (en) | 2014-09-17 | 2014-09-17 | Communication processor, VoLTE realization method, mobile terminal and data card |
| RU2017111471A RU2666621C1 (en) | 2014-09-17 | 2014-12-16 | Communication processor, method of volte implementation, mobile terminal, data card |
| EP14884279.2A EP3197117B1 (en) | 2014-09-17 | 2014-12-16 | Communication processor, method of implementing volte, mobile terminal, data card |
| PCT/CN2014/094001 WO2015131608A1 (en) | 2014-09-17 | 2014-12-16 | Communication processor, method of implementing volte, mobile terminal, data card |
Applications Claiming Priority (1)
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| CN201410474292.2A CN105430143B (en) | 2014-09-17 | 2014-09-17 | Communication processor, VoLTE realization method, mobile terminal and data card |
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| CN105430143A CN105430143A (en) | 2016-03-23 |
| CN105430143B true CN105430143B (en) | 2020-04-10 |
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| CN106488541B (en) * | 2016-09-22 | 2019-11-19 | 依偎科技（南昌）有限公司 | A kind of method, apparatus and terminal of call processing |
| CN108076416B (en) * | 2016-11-18 | 2021-11-12 | 中兴通讯股份有限公司 | Control method and device of USBTypeC earphone and terminal |
| CN108616558B (en) * | 2016-12-26 | 2021-03-19 | 展讯通信（上海）有限公司 | Method and device for establishing call and user equipment |
| CN109428858B (en) * | 2017-08-23 | 2021-02-23 | 展讯通信（上海）有限公司 | Multimedia communication device and method for transmitting multimedia data |
| CN107612894B (en) * | 2017-09-05 | 2020-07-10 | 北京佰才邦技术有限公司 | Method, system and device for processing voice service |
| CN110545571B (en) * | 2018-05-29 | 2023-03-21 | 中国电信股份有限公司 | Internet of things terminal and function switching method thereof |
| CN109147822B (en) * | 2018-10-26 | 2023-05-09 | 上海创远仪器技术股份有限公司 | System and method for VOLTE voice recording and voice quality evaluation |
| CN109688261A (en) * | 2018-11-19 | 2019-04-26 | 惠州Tcl移动通信有限公司 | Adjust method, intelligent terminal and the device with store function of voice preference |
| CN109495908B (en) * | 2018-12-05 | 2022-03-11 | 国网辽宁省电力有限公司大连供电公司 | Network optimization method based on LTE wireless and ultra-low power consumption Internet of things wireless fusion |
| CN109982402B (en) * | 2019-04-09 | 2023-08-11 | 努比亚技术有限公司 | Terminal voice calling method, mobile terminal and computer readable storage medium |
| CN110113266B (en) * | 2019-05-21 | 2021-10-29 | 山东有人物联网股份有限公司 | Modular 4G router and working method thereof |
| CN111917731B (en) * | 2020-07-10 | 2022-10-14 | 深圳市广和通无线股份有限公司 | IMS protocol stack construction method, device, computer equipment and storage medium |
| CN116388788A (en) * | 2023-03-03 | 2023-07-04 | 恒玄科技(北京)有限公司 | Multimedia system for wearable device and wearable device |
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- 2014-12-16 EP EP14884279.2A patent/EP3197117B1/en active Active
- 2014-12-16 WO PCT/CN2014/094001 patent/WO2015131608A1/en active Application Filing
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Also Published As
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| RU2666621C1 (en) | 2018-09-11 |
| WO2015131608A1 (en) | 2015-09-11 |
| CN105430143A (en) | 2016-03-23 |
| EP3197117A1 (en) | 2017-07-26 |
| EP3197117A4 (en) | 2017-07-26 |
| EP3197117B1 (en) | 2019-12-18 |
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